2025
Motivic aspects of generalized logarithmic transformations, New Developments of Birational Geometry, conference, IMSA UM, Miami, US, January, 2025.
Instanton Floer homology and Milnor Fibers, The 1st joint SNU-Renyi workshop, Renyi institute, Budapest, Hungary, January, 2025.
2024
On Hodge polynomials for non-algebraic complex manifolds, Theory of Atoms - Sofia 2024, ICMS, Sofia, Bulgaria, December, 2024.
Moduli spaces of vector bundles on Riemann surfaces, Algebraic Structures in Geometry and Physics, conference, Jeju Island, Korea, November, 2024.
Symmetric products, Jacobian and moduli space of vector bundles of a curve, Colloquium: Challenging Mathematical Problems, KIAS HCMC, Seoul, Korea, October, 2024.
Symmetric products, Jacobians and moduli spaces of vector bundles of algebraic curves, 2024 IBS-CGP Reunion Workshop on Geometry and Physics, IBS-CGP, Pohang, Korea, October, 2024.
Links and Milnor fibers of isolated singular points of complete intersections, YeungNam Workshop on Algebraic Geometry XIII, Changwon National University, Changwon, Korea, October, 2024.
Links and Milnor fibers of isolated singular points of complete intersections, seminar talk, Gyeongsang National University, Jinju, Korea, August, 2024.
Introduction to Homological Algebra, lecture series (ten 90 minutes lectures), Kyungpook National University, Daegu, Korea, June, 2024.
An introduction to moduli spaces of vector bundles on an algebraic curve, seminar talk, KIAS, Seoul, Korea, May, 2024.
Moduli space of sheaves on an algebraic curve, colloquium talk, Seoul National University, Seoul, Korea, May, 2024.
Symmetric products, Jacobian and moduli space of vector bundles of a curve, seminar talk, algebraic geometry seminar, National Taiwan University, via Zoom, May, 2024.
Space and metric, public lecture, POSTECH, Pohang, Korea, March, 2024.
Symmetric products, Jacobian and moduli space of vector bundles of a curve, School and Workshop on Moduli, K-trivial Varieties, and Related Topics, IBS-CCG, Daejeon, Korea, February, 2024.
Floer homology of 3-manifolds via algebraic geometry, 2023 Symposium in Algebraic Geometry, KIAS, Busan, Korea, February 2024.
2023
O-minimal geometry and non-K\"ahler manifolds, seminar talk, Geometry seminar, UM, Miami, US, December, 2023.
Low dimensional topology and algebraic geometry, colloquium talk, POSTECH, Pohang, Korea, November, 2023.
Counting lattice points and its applications to algebraic geometry and topology. 2023 KMS Annual Meeting, Focus Session, Seoul National University, Seoul, Korea, October 2023.
Links and Milnor fibers of complex hypersurface singularities, The 4th Workshop on Geometry and Topology around Young-Nam, Kyungpook National University, Daegu, Korea, September, 2023.
Vector bundles on elliptic surfaces and logarithmic transformations, colloquium talk, Yonsei University, Seoul, Korea, September, 2023.
Vector bundles on elliptic surfaces, Three lectures, Conference on Derived Categories and Singularities in Algebraic Geometry, Gangneung-si, Gangwon-do, Korea, August 2023.
Logarithmic transformations and change of geometric invariants via o-minimal geometry, Higher Invariants in Equivariant and Geometric Topology, conference, IMSA UM, Miami, US, May, 2023.
Logarithmic Transformations and vector bundles on elliptic surfaces via o-minimal geometry I, II, Quantum Toric Geometry, Generalized Geometries and O-Minimality, conference, IMSA UM, Miami, US, May, 2023.
Introduction to o-minimal geometry I, II, III, Lecture series, Florida International University, US, March, April, 2023.
Derived categories and VGIT, One-day Workshop on Derived Category, Konkuk University, Korea, February, 2023.
Vector bundles on elliptic surfaces and logarithmic transformations, International Workshop, Mathematics and Its Applications, Chungnam National University, Korea, January, 2023.
Logarithmic transformations of elliptic surfaces and vector bundles, Conference on Complex Geometry in Mérida – Alberto 80, Merida, Yucatan, Mexico, January, 2023.
2022
Young diagrams and vector bundles, International Conference on Combinatorial Algebraic Geometry, Korea, December 2022.
Parabolic bundles on curves and their applications, Geometry, Algebra and Physics Seminar, KIAS, Seoul, Korea, December, 2022.
Cox rings of algebraic surfaces I, II, seminar talks, CMC, Seoul, Korea, November, 2022.
Logarithmic transformations and invariants of elliptic surfaces, Geometry, Topology, Group Actions, and Singularities in the Americas, conference, IMSA, Miami, US, October, 2022.
Vector bundles on elliptic surfaces and logarithmic transformations, IBS Center for Geometry and Physics 10th Anniversary Conference, IBS-CGP, Pohang, Korea, October, 2022.
Logarithmic transformations and invariants of elliptic surfaces, Geometry, Topology, Group Actions, and Singularities in the Americas, conference, IMSA, Miami, US, October, 2022.
Vector bundles on elliptic surfaces and logarithmic transformations, IBS Center for Geometry and Physics 10th Anniversary Conference, IBS-CGP, Pohang, Korea, October, 2022.
Vector bundles on elliptic surfaces and logarithmic transformations, Geometría Algebraica para todos, Cinvestav, Mexico, August, 2022.
Vector bundles on elliptic surfaces and logarithmic transformations, Conference on Geometry and Physics, ICMS, Bulgaria, July, 2022.
Derived categories and motives of moduli spaces of vector bundles on curves, Zoom Algebraic Geometry (ZAG) Seminar, seminar talk (via Zoom), May 2022.
Geometry of algebraic surfaces via combinatorics of cones, Algebra and Topology seminar, University of Alabama, Alabama, US, April 2022.
Geometry of algebraic surfaces via their Cox rings, Algebraic Geometry seminar (via Zoom), IBS-CGP, Korea, April 2022.
Derived categories and motives of moduli spaces of vector bundles on curves, Homological Mirror Symmetry, conference, University of Miami, Florida, US, April 2022.
Derived categories and motives of moduli spaces of vector bundles on curves, seminar (via Zoom), POSTECH, Pohang, Korea, April 2022.
Birational geometry and Cox rings of spherical varieties, Workshop on Fano spherical varieties, conference (via Zoom), KIAS, Korea, February 2022.
2021
Cox rings and geometry of surfaces of general type with p_g=0, seminar talk (via Zoom), IBS-CCG, Korea, November 2021.
Hilbert schemes of plane curve singularities and matrix factorizations, Braids, links and applications, conference, IMSA University of Miami, FL, US, November 2021.
Derived categories and motives of moduli spaces of vector bundles on curves, seminar talk (via Zoom), AGEA (Algebraic Geometry in East Asia) seminar, September 2021.
Cox rings and geometry of surfaces of general type with p_g=0, Sinchon Workshop on Algebraic Geometry (via Zoom), Yonsei University, Korea, July 2021.
Derived categories and motives of moduli spaces of vector bundles on curves, seminar talk (via Zoom), CMI, India, June 2021.
Derived categories and motives of moduli spaces of vector bundles on curves, seminar talk (via Zoom), KIAS, Korea, June 2021.
Derived categories and motives of moduli spaces of vector bundles on curves, Special Session of 2021 KMS spring meeting (via Zoom), Korea, April 2021.
2020
Derived categories and motives of moduli spaces of vector bundles on curves, Math-Physics seminar (via Zoom), CMSA Harvard, US, November 2020.
Complex surfaces with p_g=q=0 via birational geometry, derived category and gauge theory, Hodge theory and rationality, virtual conference, IMSA University of Miami, US, October 2020.
2019
Derived categories and motives of some Fano varieties, 1st IMSA conference, Samuel Gitler Collaboration Center, Cinvestav, Mexico City, Mexico, November 2019.
Semiorthogonal decompositions of Fano varieties and their applications II, seminar talk, KIAS, Seoul, Korea, August, 2019.
Semiorthogonal decompositions of Fano varieties and their applications I, seminar talk, KIAS, Seoul, Korea, August, 2019.
Ulrich bundles on the Fano 3-fold V5, seminar talk, Sungkyunkwan University, Suwon, Korea, July, 2019.
Ulrich bundles on some Fano manifolds, Interactions between AG and QFT, conference, MIPT, Moscow, Russia, June, 2019.
Rational points and motives of moduli spaces of vector bundles on curves, Number theory seminar, Seoul National University, Seoul, Korea, June, 2019.
Mori dream surfaces of general type with p_g=q=0, Algebraic Geometry International Conference, KIAS, Seoul, Korea, June, 2019.
Mori dream surfaces and fibrations, seminar talk, University of Bayreuth, Bayreuth, Germany, May, 2019.
Geometry and invariants of surfaces of general type with p_g=q=0, seminar talk, University of Marburg, Marburg, Germany, May, 2019.
On the motives of some Fano varieties, KMS Focus Session : Geometry of Fano varieties, 2019 KMS Spring meeting, Kangwon National University, Korea, April, 2019.
Cox rings and derived categories of minimal surfaces of general type with p_g=0, Birational Geometry, Kahler-Einstein Metrics and Degenerations, conference, Higher School of Economy, Moscow, Russia, April, 2019.
Semiorthogonal decompositions of derived categories of Fano varieties and Ulrich bundles, Korean-Russian algebraic geometry conference, Higher School of Economy, Moscow, Russia, April, 2019
Ulrich bundles on some Fano varieties, Young Perspectives in Algebraic Geometry II, conference, University of Bayreuth, Bayreuth, Germany, April, 2019.
Introduction to the theory of derived category in algebraic geometry, seminar talk, Sungkyunkwan University, Suwon, Korea, March, 2019.
2018
Rational points and motives of moduli spaces of vector bundles on curves, PMI-POSTECH 2018 Fall Number Theory Seminar, POSTECH, Pohang, Korea, December 2018.
Cox rings of surfaces of general type, 4th YeungNam Workhsop on Alegebraic Geometry, DGIST, Daegu, Korea, November, 2018.
Derived categories and Ulrich bundles on some Fano manifolds, Algebraic Geometry in East Asia 2018, conference, Hanoi, Vietnam, October, 2018.
Semiorthogonal decompositions of derived categories of symmetric products of curves, Moduli seminar, ICMAT, Madrid, Spain, September, 2018.
Cox rings and derived categories of minimal surfaces of general type with p_g=0, Differential, Algebraic and Topological Methods in Complex Algebraic Geometry, conference, Cetraro, Italy, September, 2018.
Special curves on some algebraic surfaces, Hayama Symposium on Several Complex Variables XX and Pacific Rim Complex-Symplectic Geometry, conference, Kanagawa, Japan, July, 2018.
Ulrich bundles on some Fano manifolds, Algebraic Geometry in Gunsan, conference, Gunsan, Korea, May, 2018.
Derived categories and birational geometry, lecture series, Yonsei University, Seoul, Korea, March, 2018.
Derived categories and their applications, colloquium talk, Yonsei University, Seoul, Korea, March, 2018.
Effective, nef, semiample cones and Cox rings of some surfaces of general type with p_g=0, seminal talk, KIAS, Seoul, March, 2018.
Two dimensional submanifolds in four manifolds, seminar talk, Ewha Womans University, Seoul, Korea, February, 2018.
2017
Derived categories and Ulrich bundles, seminar talk, IISc, Bangalore, India, December, 2017.
Moduli spaces of Ulrich bundles on some Fano varieties, Moduli Spaces : Conference in honor of S. Ramanan for his 80th birthday, ICMAT, Madrid, Spain, November, 2017.
Moduli spaces of Ulrich bundles on some Fano varieties, Vector bundles on algebraic varieties, conference, IBS-CGP, Pohang, Korea, October-November, 2017.
Triangulated subcategories in derived categories of Fano orbifolds, Perspectives on Algebraic Geometry, conference, Yangyang, Korea, October, 2017.
Borel-Weil-Bott theorem and its applications, lecture series, Introductory lectures on subjects related to Lie algebras, Ewha Womans University, Seoul, Korea, August, 2017.
Fano visitor problems for algebraic surfaces, Mini workshop on algebraic surfaces 2017, KIAS, Seoul, Korea, July, 2017.
ACM bundles on some homogeneous varieties, 2017 Youngnam Mathematical Society Annual Meeting, Unist, Ulsan, Korea, July, 2017.
Semiorthogonal decompositions of derived categories of Fano varieties and their applications, seminar talk, University of Kyoto, Kyoto, Japan, June, 2017.
Ulrich bundles on some Fano manifolds, seminar talk, University of Marburg, Marburg, Germany, May, 2017.
Triangulated subcategories in derived categories of Fano orbifolds, Mathematics and Superstring Theory - Unlocking the Mysteries of the Accelerating Universe through Superstring Theory and Astrophysical Observations, IPMU, Tokyo, Japan, March, 2017.
2016
Triangulated subcategories in derived categories of Fano orbifolds, seminar talk, University of Marburg, Marburg, Germany, December, 2016.
Categories in derived categories of Fano orbifolds, seminar talk, University of Bayreuth, Bayreuth, Germany, November, 2016.
Divisors on some surfaces with $p_g=q=0,$ seminar talk, IBS-CGP, Pohang, Korea, June, 2016.
On the embedding problem of derived categories of algebraic varieties into derived categories of Fano varieties, seminar talk, IISc, Bangalore, India, March, 2016.
On the Fano visitor problem, AG seminar, IBS-CGP, Pohang, Korea, February, 2016.
2015
Semiorthogonal decompositions of derived categories of algebraic varieties, Symposium in Algebraic Geometry, Busan, Korea, December, 2015.
Quasiphantom categories in derived categories of surfaces isogenous to a higher product, MS seminar, IPMU, Tokyo, Japan, December, 2015.
Fano visitor problem for symplectic varieties, Tokyo-Seoul conference, Tokyo, Japan, December, 2015.
On the Fano visitor problem for K3 surfaces and symplectic varieties, Algebraic Surfaces and Related Topics, Bangalore, India, November, 2015.
On the Fano visitor problem for holomorphic symplectic varieties, Workshop on Algebraic Geometry, Songni-san, Korea, November, 2015.
Geometry and derived categories of some elliptic surfaces, Mini-workshop on algebraic surfaces, KIAS, Korea, October, 2015.
Semiorthogonal decompositions of derived categories of Fano varieties, Derived categories and Moduli Spaces, University of Stavanger, Norway, September, 2015.
Quasiphantom categories on some fake quadrics, seminar talk, University of Sheffield, United Kingdom, May, 2015.
Exceptional collections of maximal length on surfaces with $p_g=q=0,$ seminar talk, University of Warwick, United Kingdom, May, 2015.
Introduction to semiorthogonal decompositions of derived categories of algebraic varieties, lecture series, University of Warwick, United Kingdom, May, 2015.
Derived categories of Fano varieties and their subcategories, seminar talk, University of Warwick, United Kingdom, April, 2015.
Derived categories of some algebraic surfaces, Algebra camp, Seoul National University, Korea, February, 2015.
Derived categories of coherent sheaves on algebraic surfaces, lecture series, Winter School on Algebraic Surfaces 2015, KIAS, Korea, January, 2015.
Exceptional collections on some surfaces isogenous to a higher product, seminar talk, University of Vienna, Austria, January, 2015.
2014
Derived categories of some fake quadrics, seminar talk, Postech, Korea, December, 2014.
Derived categories of surfaces with $p_g=q=0$, seminar talk, KAIST, Korea, November, 2014.
Derived categories in algebraic geometry, seminar talk, KAIST, Korea, November, 2014.
Derived categories and their applications, seminar talk, CMC, Korea, November, 2014.
Exceptional sequences of maximal length on some surfaces isogenous to a higher product, 2014 KMS Annual Meeting, Korea, October, 2014.
Derived categories of surfaces of general type, seminar talk, KIAS, Korea, April, 2014.
Introduction to Serre's tree, lecture series, Seoul National University, Korea, January, 2014.
2013
Derived categories of surfaces isogenous to a higher product, Algebra camp, Seoul National University, Korea, August, 2013.
Derived categories of surfaces isogenous to a higher product, The Asian Mathematical Conference 2013, BEXCO, Busan, Korea, July, 2013.
Introduction to abelian varieties and Jacobians, talk for undergraduate students, Seoul National University, Korea, May, 2013.
2011
Equivariant derived categories and their applications, seminar talk, KIAS, Korea, August, 2011.
Derived categories of some algebraic varieties, Algebra camp, Seoul National University, Korea, February, 2011.
2010
Introduction to toric varieties, talk for undergraduate students, Seoul National University, Korea, June, 2010.